blocks|key|2060271|text|Lazarus在Android上运行就像Windows应用程序运行在葡萄酒(用于Linux)上吗？|type|blockquote|depth|inlineStyleRanges|entityRanges|data|2060272|实际上，这听起来更像是运行在Windows中的Java+(Swing)应用程序。Swing以绘制自己的控件而闻名，而不是使用主机操作系统(OS)提供的控件。Swing与主机操作系统(Windows等)之间的唯一连接是应用程序周围的窗口铬以及主机操作系统如何控制此窗口铬。|unstyled|2060273|如果Java不得不阻碍，那么直接运行Java代码而不创建Lazarus/Pascal代码不是更快吗？|2060274|它会更快，因为Android本机是基于Java的。事实上，如果您可以用Java编写Android应用程序，我建议您选择这一点作为首选。从这里开始学习基础知识。|offset|length|2060275|我相信这个Lazarus/Pascal库的目的是帮助运行Android上的Pascal应用程序，或者帮助Pascal程序员为Android编写应用程序。它还可以帮助编写Java的任何限制都需要使用Pascal的应用程序。|2060276|为了进一步类比，C%2B%2B和C#应用程序通常在Windows上运行得更快，因为操作系统是基于这些语言的。然而，许多应用程序仍然是用Java编写的，使用Swing接口具有各种优点，例如程序员熟悉应用程序或跨平台可用性。|2060277|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/training/basics/firstapp/index.html^0|0|0|0|1V|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|Y|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|Z|8|@]|9|@$I|10|J|11|1|12]]|A|$]]|$1|K|3|L|5|D|7|13|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|14|8|@]|9|@]|A|$]]|$1|O|3|-4|5|D|7|15|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

<blockquote>
 Is Lazarus running on the Android like a Windows app running on Wine (for Linux)?
</blockquote>

Actually, it sounds more like a Java (Swing) application running in Windows. Swing is known for drawing its own controls, rather than using the controls provided by the host operating system (OS). The only connection between Swing and the host OS (Windows, etc) is the window chrome around the application and how the host OS controls this window chrome.

<blockquote>
 If Java has to get in the way, wouldn't it be faster to directly run Java code without creating Lazarus/Pascal code?
</blockquote>

It would be faster, as Android is natively based on Java. In fact, if you can write Android apps in Java, I recommend you to pick that as your first choice. <a href="https://developer.android.com/training/basics/firstapp/index.html" rel="nofollow">Start here to learn the basics.</a>

I believe the purpose of this Lazarus/Pascal library is to help run Pascal apps on Android, or otherwise help Pascal programmers write apps for Android. It may also help write apps where any limitations of Java would require the use of Pascal.

To take the analogy further, C++ and C# apps generally run faster on Windows as the OS is natively based on these languages. However, many applications are still written in Java using Swing interface for various advantages such as programmer familiarity or cross-platform availability of the app.

blocks|key|2060282|text|换句话说，Lazarus在Android上运行是否就像一个Windows应用程序运行在葡萄酒上(适用于Linux)？|type|blockquote|depth|inlineStyleRanges|entityRanges|data|2060283|不是的。虽然对Java有轻微的偏好，但是在Android上，本机很常见，而且它们都需要通过Java框架应用程序连接到OS服务。|unstyled|2060284|如果Java不得不阻碍，那么直接运行Java代码而不创建Lazarus/Pascal代码不是更快吗？|2060285|不是的。运行的代码是本机的，只有GUI事件触发一些最小的java开销。|2060286|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|M|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|N|8|@]|9|@]|A|$]]|$1|I|3|-4|5|D|7|O|8|@]|9|@]|A|$]]]|J|$]]

<blockquote>
 In other words, is Lazarus running on the Android like a Windows app 
 running on Wine (for Linux)?
</blockquote>

No. While there is a light preference for Java, native is quite common on Android, and they all need to connect to OS services via a Java skeletal application.

<blockquote>
 If Java has to get in the way, wouldn't it be faster to directly 
 run Java code without creating Lazarus/Pascal code?
</blockquote>

No. The code that runs is native, only GUI events trigger some minimal java overhead.

blocks|key|451567|text|手机上的ARM+CPU可以本地执行Java字节码，它是内置在它们的指令集中的。因此，它不需要通过像Windows或Linux那样的解释器运行。Java并没有像其他地方那样提供这样的速度损失。这并不适用于x86安卓系统，但ARM的部分功能是为了运行Java。蛇龙|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|451568|entityMap|0|LINK|mutability|MUTABLE|url|https://en.m.wikipedia.org/wiki/Qualcomm_Snapdragon^0|3K|2|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The ARM CPUs on phones can execute Java bytecode natively, it's built into their instruction set. So it doesn't need to run through an interpreter like on Windows or Linux. Java doesn't provide such a speed penalty there as everywhere else. That's not true of x86 Android but ARMs were built partly to run Java. <a href="https://en.m.wikipedia.org/wiki/Qualcomm_Snapdragon" rel="nofollow">https://en.m.wikipedia.org/wiki/Qualcomm_Snapdragon</a>

Although a long-time developer, I've never seriously used an Android device - let alone programming one. So I'm new to this platform.

I'm looking at Lazarus for Android and found <a href="http://wiki.lazarus.freepascal.org/Custom_Drawn_Interface/Android" rel="nofollow">this link</a> that has the following lines:

<blockquote>
 LCL-CustomDrawn-Android utilizes a minimal Java application which
 communicates with our Pascal library and sends all events to it and
 also obeys commands from it.
</blockquote>

This raises a bunch of question for me.

<ol>
<li>In other words, is Lazarus running on the Android like a Windows app running on Wine (for Linux)?</li>
<li>If Java has to get in the way, wouldn't it be faster to directly run Java code without creating Lazarus/Pascal code?</li>
</ol>

Thanks!

Lazarus Pascal on Android - performance

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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虽然我是一个长期的开发人员，但我从未认真使用过Android设备--更不用说编程了。所以我对这个平台很陌生。我正在查看Lazarus，并发现有以下几行代码：使用了一个最小的Java应用程序，它与我们的Pascal库通信，并将所有事件发送给它，并服从来自它的命令。这给我带来了一大堆问题。换句话说，Lazarus在Andr...

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